Classification
330 - Economics
1,613
320 - Political science
1,604
620 - Engineering & allied operations
1,524
791 - Public performances
841
900 - History & geography
832
700 - The arts; fine & decorative arts
587
621 - Applied physics
584
530 - Physics
583
301 - Sociology & anthropology
542
300 - Social sciences
468
600 - Technology
459
340 - Law
324
006 - Special computer methods
310
770 - Photography, photographs & computer art
294
541 - Physical chemistry
250
000 - Computer science, information & general works
231
302 - Social interaction
220
500 - Natural sciences & mathematics
205
610 - Medicine & health
196
333 - Economics of land & energy
184
777 - [Unassigned]
178
306 - Culture & institutions
174
800 - Literature & rhetoric
164
778 - Fields & kinds of photography
144
380 - Commerce, communications & transportation
138
616 - Diseases
130
658 - General management
123
780 - Music
120
384 - Communications; telecommunication
109
540 - Chemistry & allied sciences
108
630 - Agriculture & related technologies
108
576 - Genetics & evolution
106
370 - Education
104
363 - Other social problems & services
96
140 - Specific philosophical schools
86
809 - History, description & criticism
85
660 - Chemical engineering
84
004 - Data processing & computer science
81
670 - Manufacturing
80
200 - Religion
79
100 - Philosophy & psychology
73
005 - Computer programming, programs & data
71
305 - Social groups
69
537 - Electricity & electronics
65
539 - Modern physics
64
331 - Labor economics
63
580 - Plants (Botany)
61
304 - Factors affecting social behavior
60
543 - Analytical chemistry
58
001 - Knowledge
57
more ...